Asphalt trimmer



Feb. 27, 1940. c N 2,191,958

ASPHALT TRIMMER Filed Oct. 19, 1939 Patented Feb. 27,1940

PATENT OFFICE 2,191,958 ASPHALT TRIMMER- C'arl F. Greiner, Springfield, Ohio, assignor to The Bufialo-Springfield Roller Co, Springfield, Ohio, a corporation of Ohio Application October 19, 1939, Serial No.-300,265

15 Claims.

This invention relates to asphalt trimmers or the like, and the principal object of the invention isto provide a novel trimming attachment comprising a series of arcuate blade units adapted to be mounted directly on the edge of the rim of a ground roller or ground wheel of substantial width to'form in effect a substantially continuous circular knife blade whereby when the roller or wheel is run along the edge of an asphalt or similar surfaced road, the edge will be trimmed to givea substantially uniform cut along said edge whilemaintaining the surface of the road adja. cent said out edge smooth and intact.

Heretofore, preparatory to widening a narrow asphalt or similar surfaced road, it has been necessary to make a cut in the road surface along its edge before excavating the trench for the foundation upon which the additional road width is to informed, and heretofore such cuts have been made by using grader blades or scarifiers. But both of these instrumentalities have been found to tear the edge of the asphalt or other surfacing material instead of forming 'a sharp clean cut therein, and such torn edges are very undesirable for the reason that when-the new material is placed on the foundation itis not properly compacted during the subsequent rolling operation due to the fact that the torn edges are usually bridged by the adjacent upheaved portions of the old hard surface of the road.

A further object of the'invention is to provide a novel, practical asphalt trimming attachment comprising a series of arcuate blade holder units adapted tobe readily clamped around the rim of a ground roller or wheel, each unit being provided with a renewable hard steel cutting blade, and the series of blades of'the units together forming a substantially continuous cutting blade around the periphery of the roller or wheel; also to provide blade holder units which may be easily and quickly applied to the roller orwhee1,and can be quickly removed when the cut is completed.

Further objects of the invention will be hereinafter set forth.

I will explain the invention with reference to the accompanying drawing which illustrates one practical embodiment'thereof, to enable others familiar with the art to adopt and use the same; and will summarize in the claims the novel features of construction, and novel combinations of parts, for which protection is desired.

In said drawing:

Fig. 1 is a perspective view showing my series of attachment units applied to the rim of a ground roller or wheel, and showing the blades thereof operating to trim a sharp clean out along the asphalt or similar surfacing material at the edge of the road.

Fig. 2 is an enlarged elevation showing a number of units of the attachment secured to the rim of .the'ground roller or wheel.

. Fig. 3 is a transverse section on the line 3-3,

The attachment is shown as applied to the rim 'of:-a ground roller'A of a road vehicle B which may be a road or ditch roller, tractor, or other vehicle having substantial weight, and said ground roller A having suflicient rim width to provide an'annular base for mounting the units.

. Each unit comprises a substantially U-shaped blade support 1 of substantial length and slightly arcuate in an axial direction as shown in Fig. 2. The legs of the U-shaped support are spaced apart a v distance somewhat greater than the thickness of the rim of wheel A, and the inner leg of the'support disposed adjacent the hub of wheel A is provided adjacent its ends with threaded bosses la adapted to receive set screws ,2, whereby when said screws are tightened the outer legs of the support will be drawn into tight contact with the, outer periphery of the wheel as shown in Fig.

' 3. The outer leg ofeach unit is provided with an,.,outwardly extending-flange lb inset from its outer end, said flange having spaced perforations lc'therein; and fitted against the rear face of the flange lb is ablade 5 having a slightly arcuate cutting edge, the inner edge of the blade being seated upon the end of said outer leg. Blade 5 is provided with countersunk holes 5a therein opposite holes mm the flange lb' and receiving the correspondingly shaped heads of bolts 3 which are passed through the registering holes 5a, lc in the blade 5 and flange lb, said bolts'being provided with nuts 4 to secure the blade to the flange lb. At each end of the unit is a reinforcing flange le extending transversely. around the outer face of the support lfrom flange lb to the bosses lo; and intermediate the end flanges la is a similar reinforcing flange lg, said flanges le, lg imparting the desired rigidity to the blade supporting unit against the clamping action of screws 2.,

A series of units 1 are mounted around the rim of wheel A as shown in Figs. 1 and 2, and the ends of the units may be slightly spaced apart as shown in Fig. 2; and when the requisite number of units are attached to the rim as above explained, the aligned blades 5 will form in effect a substantially continuous circular cutting blade around the outer periphery of the ground roller of wheel A, said blade being slightly inset from the outer edge of the rim, so that when the roller A is run along the side of an asphalt or similar surfaced roadway R adjacent the edge, the cutting blades 5 will continuously trim the edge of the hard surface of the road, making a sharp clean cut R preparatory to excavation of the lateral trench for the foundation for the additional width road material. Since the blade sections 5 are attached to the periphery of the roller A, the asphalt or other road material adjacent the cut edge R will be held compacted and intact by the rim of the roller while the cut R is being formed, thereby preserving the smooth surface of the old roadway adjacent the cut edge. I

The detachable cutting blades 5 of the units give the desired continuous uniform cut R; and

blades 5 are preferably renewable and are formed of hardened steel, and when applied to the rim of the wheel the series of blades form a substantially continuous circular cutting blade or edge; moreover, the units of the attachment can be quickly and easily applied to the roller or wheel;

and can be readily removed after the out has.

been completed. The use of a series of units l permits the attachment to be applied to rollers or wheels A of somewhat varying diameters or circumferences owing to the slight spacing between the ends of the adjacent units. One or more units may be added or removed from the series to further accommodate the attachment to different size rollers without affecting the emciency thereof.

I claim:

1. In combination with a ground roller having a rim, an annular series of blade supports mounte ed on said rim, and an annular series of blades extending from the respective supports normal to the periphery of the roller and forming a substantially continuous circular cutting edge around the said roller.

2. In a combination as set forth in claim 1, said blade supports each having a portion overlying the outer periphery of the roller and said blade extending from the extremity of said portion.

3. In a combination as set forth in claim 1, said blade supports each being substantially U shaped in cross-section and arcuate in an axial direction, and receiving the edge of the rim between the legs thereof; means on one leg for clamping the support to the rim; and said blade extending from the outer extremity of the other leg.

4. An asphalt trimming attachment compris ing a series of units each comprising a blade support of substantially U-shaped cross-section and slightly arcuate in an axial direction and adapted to embrace the edge. of a wheel rim between the legs of the unit; means carried by one leg of each unit for clamping the rim between said legs; and a blade on the other leg of each unit; the blades of the respective units when mounted on the rim forming a substantially continuous circular cutting edge around the periphery of the wheel. 7

5. In an attachment as set forth in claim 4, said clamping means comprising tapped bosses carried by the inner leg of each unit adjacent the ends thereof, and provided with tap screws. J

6. In an attachment as set forth in claim 4,

an arcuate flange on the outer leg of each unit inset from the outer end thereof, the inner edge of the blade seating upon the outer end of said outer leg; and securing means transfixing the blade and flange.

7. In an attachment as set forth inclaim 4;

spaced reinforcing flanges disposed transversely of the axis of the units and extending around the outer face thereof.

8. An asphalt trimming attachment comprising a series of units each comprising a blade support of substantially U-shaped cross-section and slightly arcuate in an axial direction and adapted to embrace the edge of a wheel rim between the legs of the unit; means carried by one leg of each unit for clamping the rim between said legs; and a blade on the other leg of each unit at the outer end thereof disposed parallel with the axis of the support; the blades of the I respective units when mounted on the rim form-.

ing a substantially continuous circular cutting edge around the outer periphery of the wheel.

9. In an attachment as set forth in claim 8,

said clamping means comprising tapped bosses carried by the inner leg of each unit adjacent the ends thereof, and tap screws extending through said bosses.

10. In an attachment as set forth in claim 8, an arcuate flange on the outer leg of each unit inset from the outer end thereof; the inner edge of the blade seating upon the outer end of said outer leg; said blade and flange having register ing holes; and bolts transfixing the blade and flange. s

11. In an attachment as set forth in claim 8,

reinforcing flanges disposed transversely of the axis of the units and extending around the outer face thereof, said flanges being disposed at the ends of and intermediate the length of the units. I 12. An asphalt trimming unit comprising a blade support of substantially U-shaped crosssection and slightly arcuate in an axial direction adapted to embrace the edge of a wheel rim between the legs of the unit; means carried by one leg of the unit for clamping the rim between said legs; and a blade on the other leg of the unit at the outer end thereof disposed parallel with the axis of the unit.

13. In an attachment as set forth in claim 12,

said clamping means comprising tapped bosses carried by the inner leg adjacent the ends thereof, and tap screws extending through said bosses. 14. In an attachment as set forth in claim 12, an arcuate flange on said outer leg inset from the outer end thereof; the inner edge of the blade seating upon the outer end of the said leg; said blade and flange having registering holes; and bolts transfixing the blade and flange.

15. In an attachment as set forth in claim 12,, 

